/********************************************************************** * File: ocrshell.h * Description: Code for the OCR side of the OCR API. * Author: Hewlett-Packard Co * * (C) Copyright 1996, Hewlett-Packard Co. ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** http://www.apache.org/licenses/LICENSE-2.0 ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. * **********************************************************************/ #ifndef OCRSHELL_H #define OCRSHELL_H /********************************************************************** * This file contains code for the OCR side of the HP OCR interface. * The code is designed to be used with either an ANSI C or C++ compiler. * The structures are designed to allow them to be used with any * structure alignment upto 8. **********************************************************************/ #include "ocrclass.h" #define EUC_FORMAT_MASK 0xe0 /********************************************************************** * ocr_open_shm * * Attempt to connect to the shared memory segment and semaphores used * in talking to the OCR engine. Called from OCR engine. * The parameters are the command line arguments in order. * The final parameter is a return value indicating the user-requested * language. The value will be LANGE_NONE if the user wishes to use * the default. **********************************************************************/ #ifdef __MAC__ INT16 ocr_open_shm(UINT16 *lang); #else INT16 ocr_open_shm( /*open the shm */ const char *shm_h, /*handle of shm */ const char *shm_size, /*size of shm segment */ const char *mutex_h, /*hp mutex */ const char *ocr_h, /*ocr semaphore */ const char *hp_h, /*hp semaphore */ const char *lang_str, /*language */ UINT16 *lang /*required language */ ); #endif /********************************************************************** * ocr_append_fontinfo * * Initialize one of the font descriptors. **********************************************************************/ INT16 ocr_append_fontinfo( /*put info into shm */ UINT16 language, /*default language */ UINT8 font_family, /*serif/not, fixed/not */ UINT8 char_set, /*character set standard */ UINT8 pitch, /*fixed or prop */ const char *name /*plain ascii name */ ); /********************************************************************** * ocr_setup_startinfo * * Setup the info on the OCR engine. Uses 16 bit chars to name the * engine. **********************************************************************/ INT16 ocr_setup_startinfo( /*put info into shm */ UINT32 protocol, /*interface version */ UINT16 language, /*default language */ const UINT16 *name, /*name of engine */ const UINT16 *version /*version of engine */ ); /********************************************************************** * ocr_setup_startinfo_ansi * * Setup the info on the OCR engine. Uses 8 bit chars to name the * engine. **********************************************************************/ INT16 ocr_setup_startinfo_ansi( /*put info into shm */ UINT32 protocol, /*interface version */ UINT16 language, /*default language */ const char *name, /*name of engine */ const char *version /*version of engine */ ); /********************************************************************** * ocr_get_first_image_strip * * Wait for the master to send the first image strip and return a * pointer to it. The result is NULL if it is time to exit. **********************************************************************/ /*get image strip */ ESTRIP_DESC *ocr_get_first_image_strip(); /********************************************************************** * ocr_get_next_image_strip * * Wait for the master to send the next image strip and return a * pointer to it. The result is NULL if it is time to exit. **********************************************************************/ /*get image strip */ ESTRIP_DESC *ocr_get_next_image_strip(); /********************************************************************** * ocr_setup_monitor * * Setup the progress monitor. Call before starting the recognize task. **********************************************************************/ ETEXT_DESC *ocr_setup_monitor(); /*setup monitor */ /********************************************************************** * ocr_char_space * * Return the number of chars that can be fitted into the buffer. **********************************************************************/ INT32 ocr_char_space(); /*put char into shm */ /********************************************************************** * ocr_append_char * * Add a character to the output. Returns OKAY if successful, HPERR * if there was insufficient room in the buffer. **********************************************************************/ INT16 ocr_append_char( /*put char into shm */ UINT16 char_code, /*character itself */ INT16 left, /*of char (-1) */ INT16 right, /*of char (-1) */ INT16 top, /*of char (-1) */ INT16 bottom, /*of char (-1) */ INT16 font_index, /*what font (-1) */ UINT8 confidence, /*0=perfect, 100=reject (0/100) */ UINT8 point_size, /*of char, 72=i inch, (10) */ INT8 blanks, /*no of spaces before this char (1) */ UINT8 enhancement, /*char enhancement (0) */ OCR_CHAR_DIRECTION text_dir, /*rendering direction (OCR_CDIR_RIGHT_LEFT) */ OCR_LINE_DIRECTION line_dir, /*line rendering direction (OCR_LDIR_DOWN_RIGHT) */ OCR_NEWLINE_TYPE nl_type /*type of newline (if any) (OCR_NL_NONE) */ ); /********************************************************************** * ocr_send_text * * Send the text to the host and wait for the ack. * Use this function after a sequence of ocr_append_text calls to * actually sent the text to the master process. * Set more to come TRUE if there is more text in this page, FALSE * if the OCR engine is now ready to receive another image. **********************************************************************/ INT16 ocr_send_text( /*send shm */ BOOL8 more_to_come /*any text left */ ); /********************************************************************** * ocr_shutdown * * Closedown communications with the HP side and free up handles. **********************************************************************/ INT16 ocr_shutdown(); /*closedown */ /********************************************************************** * ocr_error * * Inform the HP side of an error. * The OCR engine should do any cleanup of its own and exit aferwards. * Uses the current state to determine how to send it and cleanup. **********************************************************************/ void ocr_error( /*send an error code */ OCR_ERR_CODE code /*error code */ ); #endif